Category: R

Lake Erie Pileup

 Strong winds caused substantial water surface elevation differences in Lake Erie around November 15, 2020.  Here’s an animated plot of elevations measured by NOAA.  Plot was developed using R and...continue reading.

Le Monde puzzle [#1164]

The weekly puzzle from Le Monde is quite similar to older Diophantine episodes (I find myself impossible to point out): Give the maximum integer that cannot be written as 105x+30y+14z....continue reading.

Le Monde puzzle [#1158]

A weekly puzzle from Le Monde on umbrella sharing: Four friends, Antsa, Cyprien, Domoina and Fy, are leaving school to return to their common housing. It is raining and they...continue reading.